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- W4293323069 abstract "Let {(X_i,Y_i)}_{i=1}^n be a sequence of independent bivariate random vectors. In this paper, we establish a refined Cram'er type moderate deviation theorem for the general self-normalized sum sum_{i=1}^n X_i/(sum_{i=1}^n Y_i^2)^{1/2}, which unifies and extends the classical Cram'er (1938) theorem and the self-normalized Cram'er type moderate deviation theorems by Jing, Shao and Wang (2003) as well as the further refined version by Wang (2011). The advantage of our result is evidenced through successful applications to weakly dependent random variables and self-normalized winsorized mean. Specifically, by applying our new framework on general self-normalized sum, we significantly improve Cram'er type moderate deviation theorems for one-dependent random variables, geometrically beta-mixing random variables and causal processes under geometrical moment contraction. As an additional application, we also derive the Cram'er type moderate deviation theorems for self-normalized winsorized mean." @default.
- W4293323069 created "2022-08-27" @default.
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- W4293323069 date "2021-07-28" @default.
- W4293323069 modified "2023-09-27" @default.
- W4293323069 title "Refined Cram'er Type Moderate Deviation Theorems for General Self-normalized Sums with Applications to Dependent Random Variables and Winsorized Mean" @default.
- W4293323069 doi "https://doi.org/10.48550/arxiv.2107.13205" @default.
- W4293323069 hasPublicationYear "2021" @default.
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